172342243440 has 60 divisors (see below), whose sum is σ = 578782703304. Its totient is φ = 45957931392.

The previous prime is 172342243439. The next prime is 172342243457. The reversal of 172342243440 is 44342243271.

172342243440 is a `hidden beast` number, since 1 + 72 + 342 + 243 + 4 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 172342243395 and 172342243404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119681394 + ... + 119682833.

Almost surely, 2^172342243440 is an apocalyptic number.

172342243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172342243440 is an abundant number, since it is smaller than the sum of its proper divisors (406440459864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172342243440 is a wasteful number, since it uses less digits than its factorization.

172342243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239364246 (or 239364237 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 36.

The spelling of 172342243440 in words is "one hundred seventy-two billion, three hundred forty-two million, two hundred forty-three thousand, four hundred forty".